From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from smtp.kernel.org (aws-us-west-2-korg-mail-1.web.codeaurora.org [10.30.226.201]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 5B7AE3229 for ; Mon, 30 Jan 2023 14:24:04 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id B0B60C4339B; Mon, 30 Jan 2023 14:24:03 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=linuxfoundation.org; s=korg; t=1675088644; bh=LaRAyyLCSITPThZ3tQ2lc5MCg6oQhf/iv4LMyPq+pgs=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=mhfK3TfdtzWUoXyXMa/LPUS0/nJalJkr8QTUS/vgBz0S2TQcFkoKswXCcusUK5B1W 1Um19jw2JvlFS8DpAB28SoKslaGA5s9kgTWKMrdaT+c2ZWh1mtf5UTeF+9/C1JRRtp UjE3Sd9Mvh6k5kccSqyBdXioXHxsaRaSb13+k2LA= From: Greg Kroah-Hartman To: stable@vger.kernel.org Cc: Greg Kroah-Hartman , patches@lists.linux.dev, Rakesh Sankaranarayanan , Vladimir Oltean , Jakub Kicinski , Sasha Levin Subject: [PATCH 5.10 058/143] net: dsa: microchip: ksz9477: port map correction in ALU table entry register Date: Mon, 30 Jan 2023 14:51:55 +0100 Message-Id: <20230130134309.273888129@linuxfoundation.org> X-Mailer: git-send-email 2.39.1 In-Reply-To: <20230130134306.862721518@linuxfoundation.org> References: <20230130134306.862721518@linuxfoundation.org> User-Agent: quilt/0.67 Precedence: bulk X-Mailing-List: patches@lists.linux.dev List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit From: Rakesh Sankaranarayanan [ Upstream commit 6c977c5c2e4c5d8ad1b604724cc344e38f96fe9b ] ALU table entry 2 register in KSZ9477 have bit positions reserved for forwarding port map. This field is referred in ksz9477_fdb_del() for clearing forward port map and alu table. But current fdb_del refer ALU table entry 3 register for accessing forward port map. Update ksz9477_fdb_del() to get forward port map from correct alu table entry register. With this bug, issue can be observed while deleting static MAC entries. Delete any specific MAC entry using "bridge fdb del" command. This should clear all the specified MAC entries. But it is observed that entries with self static alone are retained. Tested on LAN9370 EVB since ksz9477_fdb_del() is used common across LAN937x and KSZ series. Fixes: b987e98e50ab ("dsa: add DSA switch driver for Microchip KSZ9477") Signed-off-by: Rakesh Sankaranarayanan Reviewed-by: Vladimir Oltean Link: https://lore.kernel.org/r/20230118174735.702377-1-rakesh.sankaranarayanan@microchip.com Signed-off-by: Jakub Kicinski Signed-off-by: Sasha Levin --- drivers/net/dsa/microchip/ksz9477.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/drivers/net/dsa/microchip/ksz9477.c b/drivers/net/dsa/microchip/ksz9477.c index ece4c0512ee2..f42f2f4e4b60 100644 --- a/drivers/net/dsa/microchip/ksz9477.c +++ b/drivers/net/dsa/microchip/ksz9477.c @@ -678,10 +678,10 @@ static int ksz9477_port_fdb_del(struct dsa_switch *ds, int port, ksz_read32(dev, REG_SW_ALU_VAL_D, &alu_table[3]); /* clear forwarding port */ - alu_table[2] &= ~BIT(port); + alu_table[1] &= ~BIT(port); /* if there is no port to forward, clear table */ - if ((alu_table[2] & ALU_V_PORT_MAP) == 0) { + if ((alu_table[1] & ALU_V_PORT_MAP) == 0) { alu_table[0] = 0; alu_table[1] = 0; alu_table[2] = 0; -- 2.39.0